Borges will be given near free reign to design that offense the way he sees fit. He has extensive experience as being an OC for UCLA, Indiana, Auburn, California and Oregon. He prefers a pro-style attack alternating between a big line-up with variations of the I formation, a single backfield 3 WR set (Dee Hart would have been a solid RB prospect in this regards), and then will often run a 5 WR set empty backfield (perfect for the plethora of 5-9 recievers hahaha!). I think its obvious that Devin Gardner is the preferred QB for the job. From his most recent examples at SDSU, Borges prefers to attack downfield with larger framed receivers so he'll have to scheme with the Wolverines to find a few receivers in their collection that play with "size" because he won't find a Braylon Edwards on the roster for a long time.
Borges was coordinator UCLA when they went to the Rose Bowl in the '98 season (~40 ppg), he coordinated Auburn's 2004 13-0 season with Campbell. There is a lot to be concerned with in regards to Borges success.
Borges has developed multiple NFL prospects at QB when he was coordinator at UCLA, Auburn, and now SDSU. Cade McNown, Jason Campbell and Ryan Lindley (rated as a mid-round QB talent from most sources I've read). I think that Borges will emphasize yards per passing attempt to complement the running game; he is a throw it deep coordinator but is smart enough to scheme for what the defense will give him. I don't think you'll see an inordinately high completion percentage from a Borges-led QB unless Gardner just doesn't prove to have the arm strength to launch it downfield. Ryan Mallett would have loved this scheme (not that Mallett didn't enjoy the Razorbacks, just making a comparison).
Ideally, the offense will be able to attack quickly with the passing game, but would prefer to churn out drives with a powerful running game to set-up the play action pass. I'm thinking an accurate NFL comparison would be the Atlanta Falcons. Borges is the most important hire to forge lasting success in the Hoke transition.
I am of the opinion that, like Gus Malzahn to Gene Chizik, Al Borges will be the name Buckeyes actually fear, Hoke is merely the face to the program.
